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Tennessee Gun Owners Forums
Reloading
Why are velocity nodes so important?
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<blockquote data-quote="jlanecr500" data-source="post: 5111831" data-attributes="member: 16430"><p>The research Chris did adds meaning to it all. The barrel time chart is the meat of the equation. We must remember that the barrel time list was compiled using a 6BR caliber. Bullet travel distance in the barrel is a big part of the barrel time equation. A 6BR cartridge is much shorter than MUP's 300WM so it will have a longer travel distance vs the 300WM in a given length barrel. Therefore, I take the COAL difference between the 6BR and the caliber I'm calculating for and subtract it from the barrel length on the node list. For example, MUP's barrel is 26" but after subtracting the difference in COAL, I used the 25.5"barrel length on the node list to find correct barrel times. I continue to use the 26" barrel length in Quickload.</p></blockquote><p></p>
[QUOTE="jlanecr500, post: 5111831, member: 16430"] The research Chris did adds meaning to it all. The barrel time chart is the meat of the equation. We must remember that the barrel time list was compiled using a 6BR caliber. Bullet travel distance in the barrel is a big part of the barrel time equation. A 6BR cartridge is much shorter than MUP's 300WM so it will have a longer travel distance vs the 300WM in a given length barrel. Therefore, I take the COAL difference between the 6BR and the caliber I'm calculating for and subtract it from the barrel length on the node list. For example, MUP's barrel is 26" but after subtracting the difference in COAL, I used the 25.5"barrel length on the node list to find correct barrel times. I continue to use the 26" barrel length in Quickload. [/QUOTE]
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Tennessee Gun Owners Forums
Reloading
Why are velocity nodes so important?
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